Quantitative Understanding of Charge-Transfer-Mediated Fe
N-doped graphene quantum dots
charge transfer dynamic
nM level Fe3+ sensing in human serum
plasmonic hot electrons
ultrafast photodetector
Journal
ACS applied materials & interfaces
ISSN: 1944-8252
Titre abrégé: ACS Appl Mater Interfaces
Pays: United States
ID NLM: 101504991
Informations de publication
Date de publication:
29 Jan 2020
29 Jan 2020
Historique:
pubmed:
10
1
2020
medline:
10
1
2020
entrez:
10
1
2020
Statut:
ppublish
Résumé
The formation of a heterostructure with plasmonic nanoparticles drastically alters the optoelectronic properties of graphene quantum dots (GQDs), resulting in exceptional properties. In the present work, we prepare nitrogen-doped GQDs decorated on gold nanoparticles (Au@N-GQDs) by a one-step green reduction method and study its extraordinary fluorescence and photoresponse characteristics. The as-prepared Au@N-GQDs show more than one order of magnitude enhancement in the fluorescence intensity as compared to the bare N-GQDs, which is attributed to hot electron generation and improved absorption in N-GQDs by local field enhancement and the modification of the edge functional groups. Because of the selective coordination to Fe
Identifiants
pubmed: 31914727
doi: 10.1021/acsami.9b19067
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM